﻿<p><em>IfcDocumentInformation</em> captures "metadata" of an external document.
The actual content of the document is not defined in this specification;
instead, it can be found following the <em>Location</em> attribute.</p>
<p>The same <em>IfcDocumentInformation</em> can be referenced from the exchange
structure in total or in parts (e.g. by refering to particular chapters or
paragraphs) using the <em>IfcDocumentReference</em>. All
<em>IfcDocumentReference</em>'s that utilize the
<em>IfcDocumentInformation</em> are accessible by the inverse relationship
<em>HasDocumentReferences</em>.</p>
<blockquote class="history">HISTORY&nbsp; New entity in IFC2x.</blockquote>
<blockquote class="change-ifc2x4">IFC4 CHANGE&nbsp; Attribute
<em>HasDocumentReferences</em> changed to be inverse, attribute
<em>Location</em> added, and attribute <em>ElectronicFormat</em>
modified.</blockquote>